Improvement



Abbott .Ros s lmpt - Rm MACHINES No. 118,395.

auouooouoa o auw UNITED STATES PATENT OFFICE.'

ABBOTT Q. ROSS, OF CINCINNATI, OHIO.

IMPROVEMENTQIN' MACHINES FOR ROLLING AND RAMMING ROADS.

Specification forming part of Letters Patent No. 118,395, dated August 22, 1871.

To all whom 'it may concern:

Beit known that I, ABBOTT Q. Ross, of Cin cinnati, Hamilton county, State of Ohio, have invented certain new and useful Improvements in Machines for Rolling and Rammin g Pavements, Roads, &c., of which the following is a specifica tion:

My invention consists: First, in the combination of rolling and ramming devices in one selfpropelling machine for the purpose of enabling the machine to ram and roll simultaneously in passing over a street or road, the machine being so constructed that the rammers may precede or follow the roller. Second, in the provision and peculiar construction of steam-cushions in con nection with the rammers by means ,of which each rammer is lifted slightly from the ground, after its blow is struck, to prevent dragging. Third, in the provision of a steam-heating device for theroller, to adapt the machine for rolling concrete pavements in which coal-tar is an ingredient. Fourth, in va certain construction and arrangement of the rammers with relation to each other by'which the rammers overlap each other, and no part of the road is permitted to escape the rammers which is within their width, collectively. Fifth, in the provision and arrangement,incombination with the rammers, of springs to catch the rammers near the termination of the ascending stroke and assist in their speedyreturn for the blow. Sixth, in a certain construction and arrangement of steam-cushion, ramlner, and rammer-lifter by which the lifter straddles the cushion and connects with both sides of the ramni er, and thus a very strong, compact arrangement of the parts is eii'ected.' Seventh, in' certain devices by which the rammers are rendered detachable from the operative mechanism of the roller in order that the roller may be operated alone when necessary,'the same device serving to reverse the direction of rotation of the engine and at the same time preserve the proper direction of rotation for the cam-lifter to permit the rammers to either precede or follow the roller. Eighth, in the provision, in connection with thc rammel-s, of slices for breaking rock.

Figure l is a side elevation of a machine cmbodying my invention. Fig. 2 is an end elevation of the same. Fili is a section of the steamcushion devicel for lifting the rammers oli' the ground after the blow is struck.

A is the frame of the machine. It may embody a water-tank in its construction if preferred, or the tank may be separate therefrom. Bis the roller upon which the greaterportion of the weight of the machine rests, so that the roller may press heavily upon the ground. C is a steering-wheel, placed midway in the width of the machine and adapted by swiveling (by means of curved rack D and pinion E ofsteering-shaft F) to direct the movement of the machine. Gr is a steam-boiler secured to the frame A of the machine. It supplies steam to the engine H, which operates the roller B. The engine-shaft I is connected to the roller by gear-wheels a b c d, the roller being furA nished with a spur-wheel, c, tomatch wheel (l. The roller B is made hollow and is journaled (upon one end at least) on a hollow axle, through which steam may be introduced for the purpose of heating the roller when the machine is used for concrete or plastic pavements. Steam is conducted to the roller through pipe J. The roller, being hollow, may also be filled with water when extra weight is required for rollingpurposes, the water bein g discharged, of course, when it is desirable to reduce the weight of the machine. l would here remark that I do not claim, broadly, the use of a water-weighted roller. K represents a series of vertical rammers, operated by revolvring cams L npon the shaft M. Each ofthe rammers K iseonstructed with aheavy end, 1.', a projection, k', 'by which they are' lifted, and a head, k, to connect with the cushion. The rammers may also be tted with shoes, N, construct-ed with teeth on the under side for the purpose of breaking rock. Then litters L maybe forked, as shown at L', in order that the lifter may straddle the cushion-cylinder I. I, which it is in connection with, and the cylinders then maybe placed below the shaft M. In the drawing, 1unvever,the cushione \'linders l are arranged abovethe shaft M. They communicate with thc steanrboiler by means oi' a single or double pipe, each at the bottom ofthe The other is prof structed and connected that when midway in its mining the resistance of the cushion. The head la, when the rammer falls, strikes the head p of the cushion, and the resistance oered by the steam pressure in the cylinder cushions the blow in such a way that immediately after the blow is struck the rammer is lifted oli' the ground and thus prevented from dragging on the ground as the machine moves forward. In order to compensate for the loss of force in the blow by the interposition of the cushion,each of the rammers is made to strike, in the upward stroke, against a spring, S, attached to the frame A, which acts to increase the velocity of the downward stroke by assisting the natural gravitation. The liftershaft M is operated by the shaft I through bevelgear T T', shaft U, bevel-wheel V, and doublegear sliding sleeve W. This sleeve is so consliding movement it is not geared into the Wheel V, and, consequently, the rammers are inoperative while the machine moves ahead for rolling. purposes or traveling. When the' sleeve is at either extremity of its sliding movement it is in gear, by one or other of its wheels w or 14a/,with the wheel V, and, by changing 'it from onel to the other, the machine can move with the roller in front or with the rammers in front.

The machine is propelled wholly by the traction of the roller upon the ground, the roller being revolved by the steam-engine by the connection previously described. The sleeve W 'w to is adjusted by means of lever X. The -weights k ofthe rammers are rectan-gular,-in cross-or'hor-*f izontal section, and are arranged diagonally so that they'overlap'each other, as shown in Fig. 2, in order that no part of the road can escape the rammers as the machine passes over it.l

boiler, and operating substantially as and for Athe purpose specified.

3. The hollow roller B in combination with the.

stciannlheativ 'g device ,'as' and for the purpose specified.

4. The diagonal overlapping arrangement of the rammer-weights k, as and for thep'urpose described.

5. In combination withthe rammers K and cushions P p, the springs S, as and for the purpose speciied.

6. .In combination with the rammers K k k 1c and` cushion P p p', the straddling-lifter L', 'as and for the purpose specified.. l

7. In combination with the lifter-shaft M and the propelling mechanism of the machine, the sliding sleeve W 'w w', as and for the purpose described.

8. In combination with the ramming device K la lo k L M, the shoesN, as and for the purpose specified.

In testimony of which invention I hereunto set my hand.

ABBOTT Q. ROSS.

Witnesses:

J. L. WARTMANN, FRANK MILLWARD. 

